According to the spec, textStandardDecimalSeparator "Defines a whitespace separated list of single characters that appear (individually) in the data as the decimal separator."

I tried using a list and I get this error:

[error] Test edu.illinois.ncsa.daffodil.section13.text_number_props.TestTextNumberProps.test_textStandardDecimalSeparator11 failed: edu.illinois.ncsa.daffodil.exceptions.NotYetImplementedException: Not yet implemented: lists of textStandardDeciamalSeparator

I was curious about this error message since there're a typo in the property name, so I snooped around in the source and came across this:

    // TODO: ICU only supports a single separator

    Assert.notYetImplemented(dsl.length != 1, "lists of textStandardDeciamalSeparator")

I looked through the most recent errata and spec and saw no mention of this.